wilmer@peer:~/src/bitlbee/devel$ bzr pull http://bzr.dequis.org/bitlbee/git-sync/
bzr: ERROR: exceptions.AttributeError: 'TransportRepo' object has no attribute 'ref'               

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/bzrlib/commands.py", line 930, in exception_to_return_code
    return the_callable(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/bzrlib/commands.py", line 1121, in run_bzr
    ret = run(*run_argv)
  File "/usr/lib/python2.7/dist-packages/bzrlib/commands.py", line 673, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/usr/lib/python2.7/dist-packages/bzrlib/commands.py", line 697, in run
    return self._operation.run_simple(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/bzrlib/cleanup.py", line 136, in run_simple
    self.cleanups, self.func, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/bzrlib/cleanup.py", line 166, in _do_with_cleanups
    result = func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/bzrlib/builtins.py", line 1243, in run
    local=local, show_base=show_base)
  File "/usr/lib/python2.7/dist-packages/bzrlib/decorators.py", line 218, in write_locked
    result = unbound(self, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/bzrlib/workingtree.py", line 995, in pull
    old_revision_info = self.branch.last_revision_info()
  File "/usr/lib/python2.7/dist-packages/bzrlib/decorators.py", line 155, in read_locked
    result = unbound(self, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/bzrlib/branch.py", line 1049, in last_revision_info
    self._last_revision_info_cache = self._read_last_revision_info()
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/git/branch.py", line 563, in _read_last_revision_info
    last_revid = self.last_revision()
  File "/usr/lib/python2.7/dist-packages/bzrlib/decorators.py", line 155, in read_locked
    result = unbound(self, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/git/branch.py", line 482, in last_revision
    if self.head is None:
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/git/branch.py", line 558, in _get_head
    return self.repository._git.ref(self.ref or "HEAD")
AttributeError: 'TransportRepo' object has no attribute 'ref'

bzr 2.7.0dev1 on python 2.7.9 (Linux-3.16.0-4-amd64-x86_64-with-debian-8.0)
arguments: ['/usr/bin/bzr', 'pull', 'http://bzr.dequis.org/bitlbee/git-sync/']
plugins: bash_completion[2.7.0dev1], bzrtools[2.6.0],
    changelog_merge[2.7.0dev1], git[0.6.12], grep[2.7.0dev1],
    launchpad[2.7.0dev1], netrc_credential_store[2.7.0dev1],
    news_merge[2.7.0dev1], po_merge[2.7.0dev1], rewrite[0.6.4dev],
    weave_fmt[2.7.0dev1], xmloutput[0.8.8]
encoding: 'utf-8', fsenc: 'UTF-8', lang: 'en_GB.UTF-8'

*** Bazaar has encountered an internal error.  This probably indicates a
    bug in Bazaar.  You can help us fix it by filing a bug report at
        https://bugs.launchpad.net/bzr/+filebug
    including this traceback and a description of the problem.